---
title: NUMBER_OF_CYLINDERS
framework: Kernel
role: symbol
role_heading: Instance Property
platforms: [macOS 10.3+]
path: kernel/sbcmodepagerigiddiskgeometry/1476301-number_of_cylinders
---

# NUMBER_OF_CYLINDERS

## Declaration

```occ
UInt8 NUMBER_OF_CYLINDERS[3];
```